Called "simolex" today and inquired on their P-shaped gaskets. They make to order, and the 1/4" bulb, 1/16" thickness, by 1" height (end of bulb to end of tail) P-shaped gasket is a standard size... that I think would work perfect to reset these windshields. Only problem is, they have a minimum order of 100' (they used to fill smaller orders but not any more as they sell and make over 10,000 products--too much to keep up with, etc.). He told me that 100' would be $225 + tax + shipping.
I only need roughly 8'. DARN!